<template>
    <div class="header">
        <div class="collapse-btn" @click="collapseChange">
            <el-icon v-if="collapse"><Expand /></el-icon>
            <el-icon v-else><Fold /></el-icon>
        </div>
        <div class="logo">后台管理系统</div>
        <div class="header-right">
            <div class="header-user-con">
                <div class="btn-bell" 
                @click="router.push('/tabs')">
                    <el-tooltip
                        effect="dark"
                        :content="message?`有${message}条未读消息`:`消息中心`"
                        placement="bottom"
                    >
                        <i class="el-icon-lx-notice" 
                        style="width:20px;height:20px;"></i>
                    </el-tooltip>
                    <span class="btn-bell-badge" v-if="message">2</span>
                </div>
                <el-avatar 
                class="user-avatar"
                :size="30"
                :src="imgurl"
                >
                </el-avatar>
                <el-dropdown 
                    class="user-name" 
                    trigger="click"
                    @command="handleCommand"
                >
                    <span class="el-dropdown-link">
                        {{username}}
                        <el-icon class="el-icon--right">
                            <arrow-down />
                        </el-icon>
                    </span>
                    <!-- 插槽 slot -->
                    <template #dropdown>
                        <el-dropdown-menu>
                            <a 
                            href="https://github.com/lin-xin/vue-manage-system"
                             target="_blank">
                                <el-dropdown-item>项目仓库</el-dropdown-item>
                            </a>
                            <el-dropdown-item command="user">个人中心</el-dropdown-item>
                            <el-dropdown-item divided command="loginout">退出登录</el-dropdown-item>
                        </el-dropdown-menu>
                    </template>
                </el-dropdown>
            </div>
        </div>
    </div>
</template>

<script setup lang="ts">
import { useSidebarStore } from '../store/sidebar';
import { computed } from 'vue';
import imgurl from '../assets/img/img.jpg'
import { useRouter } from 'vue-router'
const router = useRouter()
const message :number = 0;
const username = localStorage.getItem('ms_username');
const handleCommand = (command :string) => {
    if (command == 'loginout') {
        localStorage.removeItem('ms_username');
        router.push('/login')
    } else if (command == 'user') {
        router.push('/user')
    }
}
const sidebarStore = useSidebarStore()
const collapse = computed(()=> sidebarStore.collapse)
const collapseChange = () => {
    sidebarStore.handleCollapse()
}
</script>

<style scoped>
.header {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 70px;
    font-size: 22px;
    color: #fff;
}
.collapse-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    float: left;
    padding: 0 21px;
    cursor: pointer;
}
.header .logo {
    float: left;
    width: 250px;
    line-height: 70px;
}
.header-right {
    float: right;
    padding-right: 50px;
}
.header-user-con {
    display: flex;
    height: 70px;
    align-items: center;
}
.btn-fullscreen {
    transform: rotate(45deg);
    margin-right: 5px;
    font-size: 24px;
}
.btn-bell,
.btn-fullscreen {
    position: relative;
    width: 30px;
    height: 30px;
    text-align: center;
    border-radius: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.btn-bell-badge {
    position: absolute;
    right: 4px;
    top: 0px;
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: #f56c6c;
    color: #fff;
}
.btn-bell .el-icon-lx-notice {
    color: #fff;
}
.user-name {
    margin-left: 10px;
}
.user-avator {
    margin-left: 20px;
}
.el-dropdown-link {
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.el-dropdown-menu__item {
    text-align: center;
}

</style>